Solar rainbow maker
From Open renewables
This is a simple solar powered rainbow maker. As the sun shines, the small solar panel provides energy to the solar engine, which then turns the prism round with a motor and gearbox.
solar engine design
I got the circuit ideas and designs from BEAM. The PCB is setup for either the zener/double diodes, or the flashing led
instructions
total cost per kit about £10
pcb
I've just made a pcb for the project, which will make things look neater and will be easier to construct in workshops. solar rainbow pcb notes
These cost £4.57 each, and I'm happy to sell them at cost price. If you want some email me: matt at openrenewables.org.uk
